Steam-boiler.



J S.'CHAMBERS. STEAM BOILER.

APPLICATION FILED APR. 26. |913.

Patented Dec. 11, 1917 2 sul-:ERAMET l.

' 1, s. CHAMBERS.

STEAM BOILER;

APPLICAYION FILED APH.26| |913.

I Patented Dec. 11, 1917.

2 SHEETS-SHEET 2.

lll

leraren@ engeren JOHN S. CHAMBERS, GT? NEW'TYORK, N'. Y., ASSIGNOR T0 CHAMBERS VALVE COMPANY, ENEV] YORK, N. Y.,'l CORPORATION' OF NEW YOK.

STEAM-EDIL ER.Y

Snecilcation of Letters Iatent.

Patented Dee., lll, i917.

.G pplieaton filed April 28, 1913, Serial No. 763,9425.

. To all whom t mayv Concern:

e it known that i, JOHN S. CHAMBERS, a citizen of. the United States, and` resident of the borough of Manhattan, in the city and State of' New York, Ahave invented a new and useful' Improvement in Steam- Boilers, of which the following is a specification. f

This invention comprises certain improve ments in the construction, form and arrangement of' certain. portions oli a steam boiler whereby ample room is left in the usual seam dome for ready and convenient access to the interior ofthe boiler and more steam space is provided within the boiler. These results are obtained by removing the stand-pipe and its throttle-valve `from the main steam dome and moving toe stand# pipe and throttle-valve to a point along 'the boiler near the'front end thereof and providing the stand-pipe with its own auxiliary steam dome.

Practical embodiments of this invention are represented in the accompanyingdrawings, in which- Figure l is a longitudinal vertical sec-.

tion through 'a portion of a steam boiler of the locomotive type with my invention aplied thereto, the throttle and relief valves 'sing shown closed.

Fig. 2 is a detail similar section showing the throttle and relief valves open, and

Y Fig. 3 is a view similar to Fig. 1 showing a modied form of the invention.

rlhe boiler is denoted by 1, the main steam dome by 2 and its removable cap by 3. The stand-pipe is denoted by i and its auxiliary steam dome by 5. .The combined steam dome and stand-pipe are preferably cast integral' and they are localised in close proximity to the liront end of the boiler. ln Fig. 1 the combined steam dome and stand-pipe is located back of the flue sheet 6 and in llig. 3 it is located in front of the said llue sheet. throttle valve 'seat 7 is provided at the upper end or mouth of the stand-pipe il.

A- throttle valve 8 or the piston type serves to open and close oommunication lie--v `tween the interior of the auxiliary dome and stand-pipe 4, which .throttlewalve slides wil-hin a pistonchamber 9 i'orined by the depending annular flange 10 oi3 the removable oep .ll of the armiliary emana dome.

A relief valve 12 is arranged to open and piston chamber 9 through the throttle valve i S. The throttle valve is provided. with a centrally arranged passage 13- therethrough having a. seat 1l for the relief valveg12. A. valve stem 15 isrigidly secured to the relief valve 12, which stem is slidably mounted in the hub 16 of the throttle valve. This stem 15 is further provided with an` enlargement 17 slidably engaged with the guides 18' depending from the'throttle valve 8. These guides 1S have a sliding engage-4 ment with the inner walls of the stand-pipe ll and therefore serve as guides for the throttle valve and also for the valve stem 15. The throttle valve is raised from its seat by vthev engagement of the enlargement 17 with the valve hub 16 after the valve stern. has opened the relief valve 12 during the first part of the upward movement of the valve stem.,

The throttle-and relief valves'arev under the control of a rock lever, the arm 19 of which is fast on theroek shaft 20, which y shaft is connected to a throttle valve controlling means, not shown herein.

The removable cap 11 of the auxiliary dome 5 is provided with a removable plug 21 whereby access may be readily obtained `eates with the` stand-pipe 4 through the side y `.of the auxiliary steam dome 5 and leads therefrom to the superheater or T-head not shown.

ln the form shown in Fig. 3 the convey pipe 22 leads from the'top of the usual steam dome 2 at one side thereof downwardly into the interior of the boiler, thenoe forwardly in close proximity to its top and from thence the eonveypipe with the steam.

upvv ardly through the boiler shell and for- Wardly into communication with the side et the steam dome ln this form the drypipe 23 communicates with the stand-pipe 4 through the bottom of the auxiliary Steam dome 5 an to the superventing the Water rrom being drawn into In operation, When it is desired toppen the throttle-valve the 'irst part Ward movement of the valve stem will oper. the relief valve 12 and thereby release any built-up pressure in the pieton chamber 9 due to the leakage outv the steam past the throttleivalve into the said chamber. The further upward movement o the valve stem will cause the enlargement l'( to engage the hub 16 and thereby open the throttle-valve.

By locating the stanrhpipe outside of the main Steam done, it will be seen that ample room is provided for gaining access to 'the interior of the boiler by removing the cap 3.

By casting; the stand-pipe and its anxiliary steam dome integral, it will be eeen that a very simple and strong structure isv provided0 lt will also be seen that a novel construe tion, arrangement and operation oi the throttle valve is obtained in Awhich the parte are readily accessible.

lt is evident that changeal might be resorted to in the form, construction and arrangement of the several parte without depart ing from the spirit and scope of my invention; hence l do not wish to limit mysel strictly to the Structure herein Set forth, but

lhat l claim isz- 1. The combination with a steam boiler, of a Steam dome provided with a removable cap having a piston chamber therein, a stand-pipe and a throttle-valve of the pieton type therefor slidable in `eaid piston chamber.

2. The combination with a steam boiler, of a steam dome provided with a removable cap having a pieton chamber therein, a stand-pipe and a throttlevalve of the pieton tlvpe therefor elidable in. said pieton chamber and having; guiding; means engaging the etaiid-niperlfhe combination with a Steam boiler, of a steam clome having a piston chamber therein, ay stand-pipe, a, throttle valve or the the interior ol' the boiler ing the stand-pipe,

of the' upf..

aaeaoei piston type therefor slidable in said pieton chamber and a relief valve for saicl piston chamber.

l. The combination with a steam boiler, of a steam dome having a. piston chamber therein, a stand-pipe, a throttle-.valve of the piston type therefor elidable in Said piston chamber and having guidingineans engaging the stand-pipe and a relieil valve for said piston chamber.

5. rlhe combination with a steam boiler, of a steam dome havingV a pieton chamber therein, a standpipe, a throttle-valve ot' the piston type therefor slidable in said piston chamber' and having guiding means engage a relief valve for said piston chamber' and a valve Stem slidably mounted in the 'throttle-valve and its guiding means, arranged to irst open the relief valve and then the throttle-valve during its movement in one direction, and means for operating the valve stem.

6. riihe combination with of steam dome, provided with a removable cap having a piston chamber therein, a stand-pipe, a throttle-valve of the piston type therefor slidable in said piston chamber and a relief valve for said piston chamber.

7. The combination with a steam-boiler, of a steam dome provided with a, removable cap having a piston chamber therein, a stand-pipe, a"throttlevalve oil the piston type therefor eliclable in Said piston chamber and having; guiding mea-ns engaging the stand-pipe and a reliern valve for said piston chamber.

8. he combination with a steam boiler, of a steam dome having a pieton chamber therein, a stand-pipe, a throttlevalve of the piston type therefor slidable in the piston chamber, a relief valve for seid piston chamber ancl a removable plug" in the dome for gaining access to the relief valve.

9. The combination with a Steam boiler, of a steam dome provided with a cap having a 'piston chamber therein, a stand-pipe, a throttle valve or' the piston type therefor alidable in said piston chamber, a relief valve for said pieton chamber, a removable plug in said cap for gaining access to the relief valve, Said cap being! removable for gaining accese to the throttlevalve.

ln testimony, that 'il claim the foregoing as my invention., ll have signed my name, in presence of two Witnesses, this eleventh day of lllarch, i913.

JOHN Si. (lll nliillllll.

C. Sonn-eren.

a steam boiler, 

